Choir Of Western Samoa Teachers' Training College
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f685748a4741198c1fbb7e78001f60018f749203ad53188e3e8761692e6c6f8. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d9e3c0d2-623c-44da-b2c7-72a755b0df7c.json and https://artists.proofprofile.net/proofs/artist/d9e3c0d2-623c-44da-b2c7-72a755b0df7c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Samoa I Sisifo (The Music And Dances Of Western Samoa)
Samoa I Sisifo (The Music and Dances of Western Samoa)
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5af232c7541d3a1c50b66d047425e9a5d7d9b22e98c385becb6edc20bdb221ab. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NZKP01202102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9864c292590c07a7ce0630677a003b14192df0eaebbacbd13f7b6bec15127fa2. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NZKP01202103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe68c9ae4a51e6f81a58c974b04256a31bea6129e0bba33cd1201fd36790f21d4. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NZKP01202104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c7cd80573a4957769e2f3193fdebc468d7a4148842a9a1e2dd63b2d4d78fa47. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NZKP01202107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x598db3ce4c3eb36263e9db125e659ed37f1b51fe94298ffe28e3d1d69ba110f7. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NZKP01202112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8744e7935e3ed6763c51fe8e44e4bfd9f2b67847b3e1db1c5d24ff682fc59019. Chain 2 (Bitcoin): anchored in block 957735 (2026-07-12T17:47:43Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NZKP01202601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc4b676fdb532bd6373a72d3c77bae1879b3cb2cb208ad2b7ca1daeba43b99f3. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NZKP01202602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ccd5cc11f044555d83fdc5ce42f94f2694c228591f0f527d2587d3793857a57. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NZKP01202603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7384b7b2edef124ee7e46d148220ba2776c0fd36e3d2b532b179418de439673c. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NZKP01202604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x437818b34d7a620e7a4eb5a36ec2e6cb2136073743c9913bc29e925cde235544. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NZKP01202605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75c41a4c92cabce8c9077f8f6206537e289d9a71209dd335d587807ca5c15748. Chain 2 (Bitcoin): anchored in block 958666 (2026-07-19T05:00:30Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NZKP01202606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b5d48752c440fb92cdcb0963974e03e0034738f58a7834c2a0a9923805ba034. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NZKP01202608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x126bcbff1f3256b33ae512aecef24492144b9eaba9cf261cfd110cff2c686ab2. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NZKP01202401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37205b7cb93e9512db56eac930d8ebbaa64d7cf3908073c12822f791b97308dd. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T10:57:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NZKP01202402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11e58d26fc73639216212571a154481efa822559392fe97d6fb2c0611af098bf. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NZKP01202403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0ad1825f0f29490296d01ee0cac54a433802d963300a720450911d0632aba63. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NZKP01202407.